Katz, W. A. (1991). Opportunities for reference services: The bright side of reference services in the 1990's. Haworth Press.
Chicagoスタイル(17版)引用形式Katz, William A. Opportunities for Reference Services: The Bright Side of Reference Services in the 1990's. New York: Haworth Press, 1991.
MLA(9版)引用形式Katz, William A. Opportunities for Reference Services: The Bright Side of Reference Services in the 1990's. Haworth Press, 1991.
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